Combined building foundation pit drainage emergency rescue instrument

Abstract

The invention discloses a combined type building foundation pit drainage emergency rescue instrument, and belongs to the technical field of building foundation pits. The drainage ditch is excavated at the inner ring edge of the bottom of the foundation pit, and a plurality of diversion ditches are symmetrically excavated in the inner wall; the water collecting well is excavated at the bottom of the foundation pit, and each flow guide ditch can guide water into the water collecting well; the supporting platform is erected right above the water collecting well and is used as a bearing platform; the hoisting unmanned aerial vehicle hoists a drainage tracked robot capable of sucking and draining water in the foundation pit; the drainage pipe assembly is suspended in the water collecting well and connected with a connecting pipe on the drainage tracked robot, a pump body on the drainage tracked robot is responsible for negative pressure water pumping, so that water is sucked out of the water collecting well through the drainage pipe assembly and discharged through a discharge pipe at the output end of the pump body, and the end, away from the pump body, of the discharge pipe is connected with an external pipeline. According to the invention, the emergency response speed and the operation safety are improved, and the effect of rapid deployment is achieved.

Description

Technical Field

[0001] This invention belongs to the field of building foundation pit technology, and in particular to a combined building foundation pit drainage and emergency rescue device. Background Technology

[0002] Construction pit drainage and emergency repair equipment is crucial technical equipment for ensuring the safety and progress of deep foundation pit construction. It is primarily used to promptly remove accumulated water, mud, and other liquids from the pit during excavation or in situations such as sudden rainfall or groundwater seepage, preventing safety accidents such as slope instability, soil softening, and damage to the support structure due to increased water pressure. Traditional foundation pit drainage often employs fixed water pumps in conjunction with temporary hoses, sometimes supplemented by mobile pumping trucks. However, with the increasingly dense development of urban underground space, the continuous increase in foundation pit depth, and the increasingly complex construction environment, traditional drainage equipment can no longer meet the high-efficiency, intelligent, and safe requirements of modern emergency rescue in terms of response speed, operational safety, and functional integration.

[0003] Traditional foundation pit drainage relies heavily on fixed pumping stations or manual transport of portable pumps to the catchment area. In deep foundation pits (typically exceeding 10 meters in depth) or at sites where partial collapse has occurred, personnel must access the bottom of the pit via temporary ladders or baskets, then manually lay hoses, connect power, and start the equipment. This process is not only time-consuming (usually 30 minutes to several hours) but also extremely inefficient due to limitations imposed by on-site water accumulation, lighting, and ventilation. The delay in drainage response means that water pressure continues to act on the pit sidewalls, causing the soil shear strength to decrease sharply with increasing moisture content. According to soil mechanics principles, the shear strength of saturated clay can decrease by 30%-50%. If the water level cannot be effectively controlled within the critical emergency response time (usually within 30 minutes of the incident), a chain reaction can easily occur: softening of the sidewall soil → imbalance of the support structure → local instability → expansion of the collapse area. This not only prolongs the construction period and increases repair costs but also seriously threatens the lives of on-site personnel. Summary of the Invention

[0004] The purpose of this invention is to provide a combined building foundation pit drainage and emergency rescue device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a combined building foundation pit drainage and emergency rescue device, comprising: The foundation pit has a ring of slope protection steel fixed in its inner circle as a slope protection support; The drainage ditch is excavated at the inner edge of the bottom of the foundation pit, and multiple diversion ditches are symmetrically excavated on its inner wall. The sump is excavated at the bottom of the foundation pit, and each diversion ditch can guide water into the sump; The support platform is erected directly above the water collection well and serves as a load-bearing platform. The hoisting drone lifts a drainage tracked robot capable of pumping water out of the foundation pit and places it on the support platform; The drainage pipe assembly is suspended in the water collection well and connected to the connecting pipe on the drainage tracked robot. The pump body on the drainage tracked robot is responsible for negative pressure pumping, so that water is drawn out from the water collection well through the drainage pipe assembly and discharged through the discharge pipe at the output end of the pump body. The end of the discharge pipe away from the pump body is connected to an external pipeline.

[0006] In this preferred embodiment, a support frame is fixed at the bottom of the foundation pit, the support frame is fixedly connected to the support platform, the drainage pipe assembly is fixedly suspended on the bottom surface of the support platform, and a debris barrier net is fixed between each two adjacent supports.

[0007] In this preferred embodiment, the hoisting drone includes a fuselage, multiple rotors symmetrically mounted on the outer wall of the fuselage, a sealed electronic box fixed to the bottom surface of the fuselage, two inverted U-shaped supports symmetrically welded to the bottom surface of the fuselage, and drone landing gear welded to the bottom ends of the two U-shaped supports respectively.

[0008] In this preferred embodiment, a support plate is welded between two adjacent U-shaped supports, and both support plates are connected to the drainage tracked robot via quick-release components.

[0009] In a preferred embodiment, the quick-release assembly includes hydraulic telescopic rods fixed to the inner wall of the support guard plate, two extension ear plates symmetrically welded to the top of the drainage tracked robot, positioning slots opened in each extension ear plate, clamping plates welded to the free end of each hydraulic telescopic rod, and positioning blocks welded to the inner wall of each clamping plate and adapted to engage with the positioning slots.

[0010] In this preferred embodiment, the inner wall of the slope protection steel is fixed with a slope protection inner lining ring steel by bolts, and the inner wall of the slope protection inner lining ring steel is symmetrically provided with multiple limiting overlap support notches, and the two drone legs are each welded with L-shaped connecting rods in opposite directions at opposite ends.

[0011] In this preferred embodiment, the drainage pipe assembly includes a diversion pipe that runs longitudinally through the support platform, two-way branch pipes that symmetrically run through the bottom of the diversion pipe, an upper drainage pipe and a sludge discharge pipe that are respectively connected to the two branch ends of the two-way branch pipe, and a preliminary filter screen that is longitudinally penetrated by the upper drainage pipe and the sludge discharge pipe and installed in the water collection well by bolts.

[0012] In this preferred embodiment, a secondary filter cylinder is installed below the primary filter screen and in the water collection well. A supporting frame rod is welded to the bottom of the secondary filter cylinder. The supporting frame rod is installed in the water collection well by bolts. An L-shaped suction pipe is fixedly connected to the bottom of the primary filter screen through the upper drain pipe. The end of the L-shaped suction pipe away from the upper drain pipe extends to the lower part of the secondary filter cylinder.

[0013] In this preferred embodiment, an L-shaped water inlet pipe is connected to the upper part of the secondary filter cylinder. The end of the L-shaped water inlet pipe away from the secondary filter cylinder is inserted into the water collection well. A water pump is installed at the end of the L-shaped water inlet pipe close to the secondary filter cylinder. Multiple layers of filter screens are fixed in the upper part of the inner cavity of the secondary filter cylinder. The end of the L-shaped water inlet pipe that penetrates the secondary filter cylinder is located above the multiple layers of filter screens.

[0014] In this preferred embodiment, a limiting ring is welded between the bottom ends of the two L-connecting rods, which can be engaged with the outer wall of the support platform. The outer wall of the limiting ring is symmetrically and detachably connected to multiple inclined support slope protection rods. The end of each inclined support slope protection rod away from the limiting ring is positioned and engaged in the corresponding limiting overlap frame notch.

[0015] Compared with the prior art, the technical effects and advantages of the present invention are as follows: This modular building foundation pit drainage and emergency rescue equipment, by fixing the inner ring of the foundation pit with slope protection steel and coordinating it with the support platform and hoisting drone, enables the entire drainage and emergency rescue system to achieve rapid deployment and efficient operation without the need for large mechanical equipment to enter the site. Its principle is to use the aerial hoisting capability of drones to accurately deploy the drainage tracked robot to the water collection well area, and use the support platform as a load-bearing and control relay point to realize an integrated operation process of "aerial transportation - fixed-point docking - automatic drainage". Compared with the existing technology that relies on manual handling of water pumps and separate drainage or slope protection operations, it significantly improves the emergency response speed and operational safety, and achieves the effect of "rapid deployment".

[0016] By setting drainage ditches at the bottom edge of the foundation pit and coordinating them with multiple diversion ditches to concentrate seepage water from the side walls into a collection well, the water accumulated in the foundation pit can be systematically collected and prevented from spreading everywhere. The principle is to form a water guiding network that combines "point-line-surface" to effectively prevent local water accumulation from eroding the foundation pit structure or softening the foundation. This achieves active control of the overall water environment of the foundation pit. Compared with the passive drainage method that relies solely on temporary pumps in the existing technology, this avoids drainage blind spots and repetitive work, and achieves the technical effect of improving drainage efficiency and reducing seepage risk.

[0017] By employing a design that uses a hoisting drone to carry a drainage tracked robot and dock it on a support platform, heavy drainage equipment can quickly enter the deep foundation pit operation area in a non-contact manner. The principle is to utilize the vertical take-off and landing capability and precise positioning function of the drone to avoid the spatial limitations and safety hazards brought about by traditional crane or slide rail transportation. It is especially suitable for foundation pit environments that are narrow, complex, or have the risk of collapse. Compared with the existing technology that requires the construction of temporary track equipment, it greatly improves safety and achieves the technical effect of inherently safe emergency rescue operations. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the ring-shaped steel lining for the slope protection according to the present invention; Figure 3 This is a schematic diagram of the connection structure between the inclined support slope protection rod and the limiting snap ring of the present invention; Figure 4 This is a schematic diagram of the connection structure between the limiting clasp and the drainage tracked robot of the present invention; Figure 5 This is a schematic diagram of the installation structure of the drainage tracked robot of the present invention; Figure 6 This is a schematic diagram of the disassembled state structure of the positioning block and positioning slot of the present invention; Figure 7 This is a schematic diagram of the connection structure of the secondary filter cartridge of the present invention.

[0020] Figure 8 This is a schematic diagram of the installation structure of the foundation pit debris barrier according to the present invention.

[0021] Explanation of reference numerals in the attached figures: In the diagram: 1. Excavation pit; 2. Slope protection steel; 3. Slope protection inner lining ring steel; 4. Drainage ditch; 5. Sump; 6. Diversion ditch; 7. Support frame; 8. Support platform; 9. Lifting drone; 10. Inclined support slope protection rod; 11. Limiting overlap erection notch; 12. Upper drainage pipe; 13. Sludge discharge pipe; 14. Drainage pipe; 15. Limiting shackle; 16. Drone tripod; 17. L-shaped connecting rod; 18. Connecting pipe; 19. U-shaped support frame; 20. Support plate; 21. Drainage tracked robot; 2. Hydraulic telescopic rod; 23. Sealed electronic box; 24. Clamping plate; 25. Positioning block; 26. Extension ear plate; 27. Positioning bayonet; 28. Discharge pipe; 29. ​​Pump body; 30. Two-way branch pipe; 31. Solenoid valve; 32. Preliminary filter screen; 33. Lifting ring; 34. Secondary filter cartridge; 35. Support base rod; 36. L-shaped suction pipe; 37. L-shaped inlet pipe; 38. Water pump; 39. Strong adhesive; 40. Adaptor connector; 41. Arc-shaped guardrail; 42. Pit debris barrier. Detailed Implementation

[0022] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0023] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this invention, and are explained here together.

[0024] This embodiment provides, for example Figures 1 to 8 The illustrated modular building foundation pit drainage and emergency rescue equipment includes: foundation pit 1, drainage ditch 4, water collection well 5, support platform 8, and hoisting drone 9.

[0025] In this embodiment, a ring of slope-protecting steel 2 is fixed to the inner circle of the foundation pit 1 as a slope protection support; a drainage ditch 4 is excavated at the inner edge of the bottom of the foundation pit 1, and multiple diversion ditches 6 are symmetrically excavated on its inner wall; a collection well 5 is excavated at the bottom of the foundation pit 1, and each diversion ditch 6 can divert water to the collection well 5; a support platform 8 is erected directly above the collection well 5 and used as a load-bearing platform; a hoisting drone 9 hoists a drainage tracked robot 21 that can pump water from the foundation pit 1 and stops it on the support platform 8; a drainage pipe assembly is suspended in the collection well 5 and connected to the connecting pipe 18 on the drainage tracked robot 21; the pump body 29 on the drainage tracked robot 21 is responsible for negative pressure pumping, so that water is drawn out from the collection well 5 through the drainage pipe assembly and discharged through the discharge pipe 28 at the output end of the pump body 29. The end of the discharge pipe 28 away from the pump body 29 is connected to an external pipeline. Thus, the water in the foundation pit 1 and the collection well 5 is discharged. By suspending the drainage pipe assembly on the bottom of the support platform 8 and connecting it to the pump body 29 and connecting pipe 18 of the drainage tracked robot 21, the pumped water or mud can be stably discharged through the fixed pipe. The principle is to build a closed conveying channel from the inside of the water collection well 5 to the external drainage pipe network, avoiding the problems of hose dragging, tangling or being crushed, and realizing continuous and stable drainage output. Compared with the defects of temporary hoses used in the prior art, which are prone to blockage, cracking or falling off, it improves the continuity and reliability of system operation and achieves the technical advantage of long-term efficient drainage.

[0026] In this embodiment, a support 7 is fixed at the bottom of the foundation pit 1. The support 7 is fixedly connected to the support platform 8. The drainage pipe assembly is fixedly suspended on the bottom surface of the support platform 8. A foundation pit debris barrier 42 is fixed between two adjacent supports 7. At the same time, an arc-shaped guardrail 41 is welded between the outer walls of two adjacent supports 7. The foundation pit debris barrier 42 and the arc-shaped guardrail 41 are fixed together, which not only supports the stability of the support 7, but also improves the stability of the foundation pit debris barrier 42 and prevents the impact of debris (such as wood blocks) in the foundation pit. At the same time, the design of the foundation pit debris barrier 42 can reduce the entry of large solid debris (such as wood blocks and timber) into the water collection well 5, thereby achieving the effect of intercepting debris.

[0027] In this embodiment, the hoisting drone 9 includes a fuselage, multiple rotors symmetrically mounted on the outer wall of the fuselage, a sealed electronic box 23 fixed to the bottom surface of the fuselage, two inverted U-shaped brackets 19 symmetrically welded to the bottom surface of the fuselage, and drone tripods 16 respectively welded to the bottom ends of the two U-shaped brackets 19.

[0028] In this embodiment, a support plate 20 is welded between two adjacent U-shaped brackets 19, and both support plates 20 are connected to the drainage tracked robot 21 through quick-release components.

[0029] In this embodiment, the quick-release assembly includes hydraulic telescopic rods 22 fixed to the inner wall of the support guard plate 20, two extension ear plates 26 symmetrically welded to the top of the drainage tracked robot 21, positioning slots 27 opened in each extension ear plate 26, clamping plates 24 welded to the free extension end of each hydraulic telescopic rod 22, and positioning blocks 25 welded to the inner wall of each clamping plate 24 and adapted to engage with the positioning slots 27. When quick-release of the drainage tracked robot 21 is required, the two hydraulic telescopic rods 22 retract synchronously, driving the clamping plates 24 to retract, so that the two positioning blocks 25 disengage from the two positioning slots 27 respectively, thereby no longer clamping and lifting the drainage tracked robot 21. If quick-release and lifting of the drainage tracked robot 21 is required, the two hydraulic telescopic rods 22 extend synchronously, driving the clamping plates 24 to clamp onto the extension ear plates 26, so that the positioning blocks 25 engage in the positioning slots 27, thereby completing the clamping and lifting of the drainage tracked robot 21.

[0030] In this embodiment, the inner wall of the slope protection steel 2 is fixed with a slope protection inner lining ring steel 3 by bolts. The inner wall of the slope protection inner lining ring steel 3 has multiple symmetrically symmetrically formed limiting overlap support notches 11. Two drone legs 16 have opposite ends welded with opposing L-shaped connecting rods 17. The inclined support slope protection rod 10, after having its tilt angle pre-set, is positioned and engaged the moment the drone stops, and is bolted to the outer wall of the limiting ring 15 (as shown in the attached diagram). Figure 3As shown in the attached diagram, this allows the drone to come to a complete stop without the need for additional tools or human intervention. The principle behind this is the rigid connection structure of the L-link 17 and the limiting ring 15, ensuring that the multiple inclined support slope protection rods 10 remain aligned with the notch 11 in spatial orientation (as shown in the attached diagram). Figure 1 As shown in the diagram, once the drone lands smoothly, gravity and the structure's self-guiding action cause the free end of the support rod to slide smoothly into the groove, achieving rapid locking. This establishes lateral support force on the slope protection steel 2 in a very short time, effectively suppressing the risk of sidewall deformation or instability caused by water pressure, soil pressure, or vibration. After the inclined support slope protection rod 10 is installed and engaged with the limiting overlap notch groove 11, drainage begins. This achieves the safety guarantee function of simultaneous drainage and slope protection. Compared with the existing technology where drainage and support are implemented in stages and there is a time difference leading to a risk window period, this significantly improves the inherent safety of emergency rescue operations.

[0031] In this embodiment, the drainage pipe assembly includes a diversion pipe 14 that runs longitudinally through the support platform 8, two-way branch pipes 30 that symmetrically run through the bottom of the diversion pipe 14, an upper drainage pipe 12 and a sludge discharge pipe 13 that are respectively connected to the two branch ends of the two-way branch pipes 30, and a preliminary filter screen 32 that is longitudinally penetrated by the upper drainage pipe 12 and the sludge discharge pipe 13 and installed in the water collection well 5 by bolts. A hanging ring 33 is installed on the top of the preliminary filter screen 32. By integrating the drainage pipe assembly with the diversion pipe 14, the two-way branch pipe 30, the upper drainage pipe 12, and the sludge discharge pipe 13, and cooperating with the solenoid valve 31 to switch the path, the system can intelligently select the drainage mode according to the water quality. The principle is to switch between "clean water filtration discharge" and "sludge direct discharge" through the electronically controlled valve, avoiding the clogging problem of the filtration system under high-concentration sludge conditions, and realizing the adaptive treatment of different media. Compared with the shortcomings of the single drainage mode in the existing technology, which is prone to filter clogging and efficiency reduction, the system's adaptability under complex hydrological conditions has been improved, achieving a technological breakthrough of multi-functionality and high adaptability. Before the hoisting drone 9 takes off, a ring of strong adhesive 39 is first applied to the outer wall of the bottom periphery of the connecting pipe 18. The drain pipe 14 extends upward through the top of the support platform 8 and is set as an adapter connector 40. After the hoisting drone 9 takes off and comes to a stop, the bottom end of the connecting pipe 18 is inserted into the adapter connector 40, so that the strong adhesive 39 is strongly bonded to the inner wall of the adapter connector 40, thereby connecting the connecting pipe 18 and the drain pipe 14, which helps with subsequent drainage and improves the sealing to prevent air leakage, thereby improving the efficiency of negative pressure drainage.

[0032] In this embodiment, a secondary filter cylinder 34 is provided below the primary filter screen 32 and located in the water collection well 5. A support frame rod 35 is welded to the bottom end of the secondary filter cylinder 34. The support frame rod 35 is installed in the water collection well 5 by bolts. The upper drain pipe 12 passes through to the bottom end of the primary filter screen 32 and is fixedly connected to an L-shaped suction pipe 36. The end of the L-shaped suction pipe 36 away from the upper drain pipe 12 passes through to the lower part of the secondary filter cylinder 34.

[0033] In this embodiment, an L-shaped water inlet pipe 37 is connected to the upper part of the secondary filter cylinder 34. The end of the L-shaped water inlet pipe 37 away from the secondary filter cylinder 34 is inserted into the water collection well 5. A water pump 38 is provided at the end of the L-shaped water inlet pipe 37 close to the secondary filter cylinder 34. A multi-layer filter screen is fixed in the upper part of the inner cavity of the secondary filter cylinder 34. The end of the L-shaped water inlet pipe 37 that passes through the secondary filter cylinder 34 is located above the multi-layer filter screen. Water initially filtered by the primary filter screen 32 flows into the collection well 5, while solid impurities larger than the pore size of the primary filter screen 32, such as stones and leaves, remain on the primary filter screen 32. The water pump 38 starts, drawing the water initially filtered by the primary filter screen 32 from the collection well 5 into the secondary filter cylinder 34 through the L-inlet pipe 37. In the secondary filter cylinder 34, the water undergoes secondary filtration through multiple filter screens, causing solid impurities larger than the pore size of the multiple filter screens, such as stones and leaves, to remain on the multiple filter screens. The water flows to the lower part of the inner cavity of the secondary filter cylinder 34, and the solenoid valve 31 on the corresponding two-way branch pipe 30 on the upper drain pipe 12 is opened, starting the pump body 29. Water is drawn from the lower part of the inner cavity of the secondary filter cartridge 34 through the negative pressure suction pipe 18 via the L suction pipe 36 and the upper drain pipe 12 into the diversion pipe 14, and then drawn away by the connecting pipe 18 and discharged into the external pipeline through the discharge pipe 28, thus completing the drainage. When it is necessary to pump out mud, the solenoid valve 31 on the two-way branch pipe 30 corresponding to the upper drain pipe 12 is closed, and the solenoid valve 31 on the two-way branch pipe 30 corresponding to the mud discharge pipe 13 is opened, so that the mud in the collection well 5 is discharged from the mud discharge pipe 13 into the diversion pipe 14, then from the diversion pipe 14 into the connecting pipe 18, and finally from the discharge pipe 28 into the external pipeline, thus discharging the mud in the collection well 5. The main control circuit board inside the sealed electronic box 23 is connected to the bottom electrical plug module through wires, and the electrical plug module is connected to the two solenoid valves 31 on the two-way branch pipe 30 through cables. Each solenoid valve 31 is a 24V DC solenoid valve, with its control line connected to a relay module. Its on / off state is controlled by the GPIO port of the flight control board in the hoisting drone 9 via a program. By installing a preliminary filter screen 32 and a secondary filter cartridge 34 in the collection well 5, along with the L-shaped inlet pipe 37 and the water pump 38, the water undergoes two stages of physical filtration before entering the pump body 29. This effectively intercepts solid impurities of different particle sizes by utilizing a combination of spatial stratification and gravity settling. However, when the sludge discharge pipe 13 is open, high-concentration sludge in the collection well 5 can bypass the filtration system and be discharged directly; while when the upper drain pipe 12 is open, only the clearer water that has undergone preliminary sedimentation and secondary filtration is allowed to enter the pump body, thus preventing pump blockage. This valve-switching mode, which achieves "filtering and clearing" and "direct discharge of concentrated sludge," improves drainage efficiency and extends equipment lifespan, enabling adaptation to complex operating conditions.

[0034] In this embodiment, a limiting ring 15 is welded between the bottom ends of the two L-connecting rods 17, which can be locked onto the outer wall of the support platform 8. Multiple inclined support slope rods 10 are symmetrically and detachably connected to the outer wall of the limiting ring 15. Multiple screw holes (as shown in the attached diagram) are provided on the outer wall of the limiting ring 15. Figure 3 and attached Figure 4 The screw holes on the periphery of the limiting ring 15 (as shown) are connected to the extended ear plate on the outer wall of the inclined support slope protection rod 10 near the limiting ring 15 by bolts, thereby installing the inclined support slope protection rod 10 on the outer wall of the limiting ring 15, so that the end of each inclined support slope protection rod 10 away from the limiting ring 15 is positioned and locked in the corresponding limiting overlap frame notch 11. When the hoisting drone 9 drives the drainage tracked robot 21 to stop on the support platform 8, the drainage tracked robot 21 discharges water and mud from the foundation pit 1 and the collection well 5 through the pump body 29 and the drainage pipe assembly. At the same time, the stopping of the hoisting drone 9 fixes the limiting ring 15 to the periphery of the support platform 8, so that the support platform 8, the inclined support slope protection rod 10 and the limiting ring 15 work together to support the slope protection steel 2 inside the foundation pit 1, thereby achieving the emergency drainage and slope protection effect. When the hoisted drone 9 is docked on the support platform 8, the L-shaped connecting rod 17 extending from its drone landing gear 16 drives the limiting ring 15 to engage with the outer wall of the support platform 8. Furthermore, the free end of the detachable inclined slope protection rod 10 on the limiting ring 15 overlaps and engages with the limiting overlap notch 11 on the inner wall of the slope protection lining ring steel 3. This design ensures that once the drone is docked, it triggers the temporary slope protection support mechanism of the pit sidewall. The principle lies in integrating the drone's "stabilization" with the slope protection structure. The "installation snap-fit" achieves mechanical linkage. After the drone comes to a stop, the limiting snap ring 15 snaps into the sides of the support platform 8. Then, the inclined support slope protection rod 10 with a pre-set tilt angle snaps into the limiting overlap erection notch 11. This realizes the dynamic slope protection function of "using the drainage platform as the fulcrum and the drone as the trigger source". It achieves the unexpected technical effect of dual use and action-oriented command. That is, the drone is not only a transportation tool, but also becomes the "start switch" for slope protection, which significantly improves the response efficiency of emergency rescue. The hoisting drone 9 is controlled by the ground remote controller to take off and fly to the pit operation area. Using GPS navigation, it lands on the support platform 8. The physical snap-fit ​​(limiting snap ring 15) is completed. The flight control system of the hoisting drone 9 confirms the "positioning" status. The operator selects the drainage mode (clean water / mud). The flight control board of the hoisting drone 9 controls the corresponding solenoid valve 31 to open through the wired circuit, starts the water pump 38 and pump body 29, and begins drainage. After the operation is completed, the valve is closed, the power connection is disconnected, and the drone takes off and is recovered.

[0035] Working principle This modular foundation pit drainage and emergency repair equipment, after the foundation pit 1 is constructed, firstly fixes a high-strength slope protection steel 2 around its inner circumference to prevent soil slippage and slope collapse. Inside the slope protection steel 2, a slope protection inner lining ring steel 3 is installed via bolt connection to enhance the overall structural rigidity. Multiple limiting overlap notches 11 are symmetrically opened on its inner wall to provide a structural foundation for the subsequent positioning and clamping of support rods. A ring-shaped drainage ditch 4 is excavated at the inner edge of the bottom of foundation pit 1 to collect seepage water from the pit sidewalls. Multiple diversion ditches 6 are symmetrically excavated on the inner wall of the drainage ditch 4 to guide the water flow to the collection well 5 in the central area of ​​the foundation pit. The collection well 5, as the core of the entire drainage system, performs the functions of collection, temporary storage, and initial sedimentation. A support platform 8 is erected directly above the collection well 5. This platform is fixed to the bottom of foundation pit 1 by a bottom bracket 7, forming a stable aerial support platform for docking and hoisting drones 9 and supporting drainage pipe components.

[0036] A hoisting drone 9, carrying a drainage tracked robot 21, flies to the top of the foundation pit and precisely lands it on the support platform 8. The drone 9 includes a fuselage, rotors, a sealed electronic box 23, an inverted U-shaped support 19, and drone landing gear 16. A support plate 20 is welded between the two U-shaped supports 19, and the support plate 20 is quickly connected to the drainage tracked robot 21 via a quick-release assembly. Once the drone 9 lands, two hydraulic telescopic rods 22 extend synchronously, pushing the clamping plate 24 inwards, causing the positioning block 25 to insert into the positioning slot 27 on the top extension ear plate 26 of the drainage tracked robot 21, completing automatic clamping and fixing. If disassembly is required, the hydraulic telescopic rods 22 retract, the clamping plate 24 retracts, and the positioning block 25 disengages from the positioning slot 27, achieving rapid release.

[0037] When the hoisting drone 9 is docked on the support platform 8, the L-shaped connecting rods 17 welded to both ends of its drone landing gear 16 extend outwards, and a limiting ring 15 is welded between the bottom ends of the two L-shaped connecting rods 17. This limiting ring 15 is precisely engaged with the outer circumferential wall of the support platform 8, achieving stable positioning of the drone 9. The outer circumferential wall of the limiting ring 15 is symmetrically and detachably connected to multiple inclined slope protection rods 10 with pre-set tilt angles. When the drone 9 is completely stationary, the free ends of these inclined slope protection rods 10 naturally tilt downwards and precisely overlap and engage in the limiting overlap notch 11 on the inner wall of the inner lining ring steel 3 of the slope protection.

[0038] The drainage pipe assembly includes a longitudinally penetrating diversion pipe 14 running through the support platform 8, with its bottom end connected to a two-way branch pipe 30, which connects to the upper drainage pipe 12 and the sludge discharge pipe 13 respectively. The upper drainage pipe 12 is connected to a primary filter screen 32, which is bolted to the collection well 5 and has a lifting ring 33 at the top for easy maintenance and hoisting. A secondary filter cylinder 34 is installed below the primary filter screen 32, with its bottom fixed to the collection well 5 by a supporting frame rod 35. The upper end of the upper drainage pipe 12 is connected to an L-shaped suction pipe 36, with its outlet located at the lower part of the secondary filter cylinder 34. The upper part of the secondary filter cylinder 34 is connected to an L-shaped inlet pipe 37, with its inlet end inserted into the collection well 5 and the other end connected to a water pump 38.

[0039] When the pit contains clean water, the solenoid valve 31 corresponding to the upper drainage pipe 12 is opened. The pump body 29 and the water pump 38 start, drawing water from the collection well 5, after the initial filter screen 32 has preliminarily intercepted large particles such as stones and leaves, into the secondary filter cartridge 34 through the L inlet pipe 37. Inside the secondary filter cartridge 34, multiple layers of filter screens perform fine filtration of the water, removing fine suspended solids. The filtered clean water accumulates at the bottom of the cartridge, and is then connected by the pump body 29 through the L suction pipe 36, the upper drainage pipe 12, the diversion pipe 14, and the connecting pipe 18, which are bonded together with strong adhesive 39. This seals the diversion pipe 14 and the connecting pipe 18, creating a negative pressure suction, and finally discharges the water into the external drainage pipe through the discharge pipe 28.

[0040] When a large amount of mud or high-concentration suspended solids accumulates in the collection well 5, the solenoid valve 31 corresponding to the upper drainage pipe 12 is closed, and the solenoid valve 31 corresponding to the mud discharge pipe 13 is opened. At this time, the mud directly enters the diversion pipe 14 through the mud discharge pipe 13, and is then pumped out by the pump body 29 through the connecting pipe 18 and discharged from the discharge pipe 28. This mode avoids mud clogging the filtration system and ensures continuous drainage capacity under complex working conditions. The drone 9 carries the drainage tracked robot 21 away from the site and can be transferred to the next emergency rescue point for reuse. Detachable components such as the support platform 8, bracket 7, and drainage pipe assembly can be recycled or kept on site for backup as needed.

[0041] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined building foundation pit drainage and emergency rescue device, characterized in that, include: The foundation pit (1) has a ring of slope protection steel (2) fixed in its inner circle as slope protection support; Drainage ditch (4) is excavated at the inner edge of the bottom of the foundation pit (1), and multiple diversion ditches (6) are symmetrically excavated on its inner wall. The water collection well (5) is excavated at the bottom of the foundation pit (1), and each diversion ditch (6) can divert water to the water collection well (5); The support platform (8) is erected directly above the water collection well (5) and used as a load-bearing platform; The hoisting drone (9) hoists a drainage tracked robot (21) that can pump water out of the pit (1) and stops it on the support platform (8); The drain pipe assembly is suspended in the water collection well (5) and connected to the connecting pipe (18) on the drainage tracked robot (21). The pump body (29) on the drainage tracked robot (21) is responsible for negative pressure pumping, so that water is drawn out from the water collection well (5) through the drain pipe assembly and discharged through the discharge pipe (28) at the output end of the pump body (29). The end of the discharge pipe (28) away from the pump body (29) is connected to an external pipeline.

2. The combined building foundation pit drainage and emergency rescue device according to claim 1, characterized in that: Multiple supports (7) are fixed at the bottom of the foundation pit (1). The supports (7) are fixedly connected to the support platform (8). The drainage pipe assembly is fixedly suspended on the bottom surface of the support platform (8). A foundation pit debris net (42) is fixed between two adjacent supports (7).

3. The combined building foundation pit drainage and emergency rescue device according to claim 2, characterized in that: The hoisting drone (9) includes a fuselage, multiple rotors symmetrically mounted on the outer wall of the fuselage, a sealed electronic box (23) fixed to the bottom of the fuselage, two inverted U-shaped brackets (19) symmetrically welded to the bottom of the fuselage, and drone tripods (16) respectively welded to the bottom of the two U-shaped brackets (19).

4. The combined building foundation pit drainage and emergency rescue device according to claim 3, characterized in that: A support plate (20) is welded between two adjacent U-shaped brackets (19), and both support plates (20) are connected to the drainage tracked robot (21) via quick-release components.

5. A combined building foundation pit drainage and emergency rescue device according to claim 4, characterized in that: The quick-release assembly includes hydraulic telescopic rods (22) fixed to the inner wall of the support guard plate (20), two extension ear plates (26) symmetrically welded to the top of the drainage tracked robot (21), positioning slots (27) opened in each extension ear plate (26), clamping plates (24) welded to the free end of each hydraulic telescopic rod (22), and positioning blocks (25) welded to the inner wall of each clamping plate (24) and adapted to engage with the positioning slots (27).

6. A combined building foundation pit drainage and emergency rescue device according to claim 5, characterized in that: The inner wall of the slope protection steel (2) is fixed with a slope protection inner lining ring steel (3) by bolts. The inner wall of the slope protection inner lining ring steel (3) is symmetrically provided with multiple limiting overlap support notches (11). The two UAV legs (16) are welded with L connecting rods (17) in opposite directions at opposite ends.

7. A combined building foundation pit drainage and emergency rescue device according to claim 1, characterized in that: The drainage pipe assembly includes a diversion pipe (14) that runs longitudinally through the support platform (8), a two-way branch pipe (30) that runs symmetrically through the bottom of the diversion pipe (14), an upper drainage pipe (12) and a sludge discharge pipe (13) that are respectively connected to the two branch ends of the two-way branch pipe (30), and a preliminary filter screen (32) that is longitudinally penetrated by the upper drainage pipe (12) and the sludge discharge pipe (13) and installed in the water collection well (5) by bolts.

8. A combined building foundation pit drainage and emergency rescue device according to claim 7, characterized in that: A secondary filter cylinder (34) is installed below the primary filter screen (32) and in the water collection well (5). A support frame rod (35) is welded to the bottom of the secondary filter cylinder (34). The support frame rod (35) is installed in the water collection well (5) by bolts. The upper drain pipe (12) passes through to the bottom of the primary filter screen (32) and is fixedly connected to an L-suction pipe (36). The end of the L-suction pipe (36) away from the upper drain pipe (12) passes through to the lower part of the secondary filter cylinder (34).

9. A combined building foundation pit drainage and emergency rescue device according to claim 8, characterized in that: The upper part of the secondary filter cylinder (34) is connected to an L-shaped water inlet pipe (37). The end of the L-shaped water inlet pipe (37) away from the secondary filter cylinder (34) is inserted into the water collection well (5). A water pump (38) is installed at the end of the L-shaped water inlet pipe (37) close to the secondary filter cylinder (34). A multi-layer filter screen is fixed in the upper part of the inner cavity of the secondary filter cylinder (34). The end of the L-shaped water inlet pipe (37) that passes through the secondary filter cylinder (34) is located above the multi-layer filter screen.

10. A combined building foundation pit drainage and emergency rescue device according to claim 6, characterized in that: A limiting ring (15) that can be locked onto the outer wall of the support platform (8) is welded between the bottom ends of the two L-links (17). The outer wall of the limiting ring (15) is detachably connected to multiple inclined support slope protection rods (10). The end of each inclined support slope protection rod (10) away from the limiting ring (15) is positioned and locked into the corresponding limiting overlap frame notch (11).

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